5306-01-349-9557
Find complete technical information, availability, and procurement data for: 5306-01-349-9557
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
3a thread class, double hexagon w/hole head style, right-hand thread direction, 1.295 inches minimum and 1.325 inches maximum fastener length, 0.560 inches nominal thread length
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Thread Length
- 0.560 inches nominal
- Fastener Length
- 1.295 inches minimum and 1.325 inches maximum
- Head Style
- double hexagon w/hole
- Head Height
- 0.378 inches minimum and 0.398 inches maximum
- Width Between Flats
- 0.430 inches minimum and 0.439 inches maximum
- Extended Washer Diameter
- 0.639 inches minimum and 0.649 inches maximum
- Extended Washer Thickness
- 0.081 inches minimum and 0.101 inches maximum
- Grip Diameter
- 0.3740 inches minimum and 0.3745 inches maximum
- Nominal Thread Diameter
- 0.375 inches
- Grip Length
- 0.740 inches minimum and 0.760 inches maximum
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 220000 pounds per square inch
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Part Name Assigned By Controlling Agency
- navy special project
- Material Document And Classification
- ams 5662 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Thread Series Designator
- unjf
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FAQs
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